BACK PRESSURE REGULATION
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United States of America Patent
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Issued Date -
Jan 29, 2015
app pub date -
Mar 4, 2013
filing date -
Mar 8, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The invention generally provides a dynamic back pressure regulator. In exemplary embodiments, the back pressure regulator includes an inlet, an outlet, a seat disposed between the inlet and the outlet and defining at least part of a fluid pathway, and a needle displaceable relative to the seat to form a restriction region therebetween for restricting fluid flow between the inlet and the outlet. In some embodiments, the needle can be formed of a chemically resistant ceramic or have a metal plating to provide corrosion and/or erosion resistance.
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